micro-cloud/microcloud-provider-dept-hystrix-8001/src/main/java/cn/hhj/controller/DeptRest.java

package cn.hhj.controller;

import cn.hhj.service.IDeptService;
import cn.hhj.vo.Dept;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

@RestController
public class DeptRest {
    @Autowired
    private IDeptService deptService;

    @GetMapping("/dept/get/{id}")
    @HystrixCommand(fallbackMethod = "getFallback")// 指定方法跑出异常时执行的方法
    public Object get(@PathVariable("id") long id) {
        Dept vo=this.deptService.get(id);
        if (vo == null) { // 数据不存在，假设让它抛出个错误
            throw new RuntimeException("部门信息不存在！") ;
        }
        return vo;
    }

    public Object getFallback(@PathVariable("id") long id) { // 此时方法的参数 与get()一致
        Dept vo = new Dept() ;
        vo.setDeptno(999999L);
        vo.setDname("【ERROR】Microcloud-Dept-Hystrix"); // 错误的提示
        vo.setLoc("DEPT-Provider");
        return vo ;
    }
}